Machine for applying coatings.



No. 707,620. Patented Aug. 26, |902. J. B. MGKEOWN.

MACHINE FDR APPLYING CUATINGS.

(Applicatinn filed 9ct. 18, 1901.)

No. 707,620. Patented Aug. 26, |902.

` J. B. McKEOWN.

MACHINE FDR APPLYING CATINGS.

(Application filed Oct. 18, 1901.)

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JOSEPH l. MCKEOlVN, OF UNIONl HILL, NEWr JERSEY.

SPECIFICATION forming part of Letters Patent N0. 707,620, dated Augustf26, 1902. Application led October 1.8, 1901. Serial No. 79,166. (No model.)

Be it known that I, JOSEPH B. McKnowN, a citizen of the United States, and a resident of Union Hill, in the county of Hudson and State of New Jersey, have invented a new and Improved Machine for Applying Coatings, of which the following is a full, clear, and exact description.

The invention relates to machines used in the manufacture of mirrors and other articles requiring a coating; and the object of the invention is to provide a new and improved machine for applying amalgam or other coating material to glass or other surfaces in a very simple, effective, and uniform manner and without the employment of skilled labor.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is an end elevation of theimprovement. Fig. 2 is a side elevation of the same with parts in section. Fig. 3 is an enlarged cross-section of the distributer for the coating material, the section being on the line 3 3 of Fig. a. Fig. is a longitudinal sectional elevation of the same on the line 44 of Fig. 3. Fig. 5 is an end View of the same. Fig. 6 is an inverted plan view vof a modified form of the distributer, and Fig. 7 is a sectional plan view of the improvement on the line 7 7 of Fig. 2.

On a suitably-constructed frame A is arranged a longitudinally -extending track B, on which is mounted to travel the wheels C of a table C, adapted to support the glass or other surfaces D to be coated with amalgam or other suitable coating material E, contained in a distributer F, preferably in the form of a pipe extending transversely and supported by suitable brackets in the main frame A. The distributer or pipe F is provided on its under side with a slot F or with rows of apertures F2 (see Figs. 3 and 6) to allow the amalgam or other coating material E to pass from the distributer F onto the surfaces D as the table C is moved along on the track B in the direction of the arrow d'. The table C is rstpushed along the track B by hand until a rackpl2 on the under side of the table engages a gear-wheel C3, secured on a shaft (1,journaled in suitable bearings on the main frame A-and connected by pulleys and belt with other machinery (not shown) for continuously rotating the shaft C4and its gear-wheel C3.4 The gear-wheel C3 is located below the distributer F, so that during the time the table C and the surfaces D thereon pass under the distributer it is evident that the surfaces are moved at a uniform rate of speed below the distribnter, so that the amalgam or other coating material is uniformly discharged and deposited on the surfaces D. The distributer F is connected at its ends by vertically-disposed branch pipes G with a reservoir H, containing the amalgam or other coating material, and the said branch pipes G are also connected with a pressure-supply pipe I, connected by a pipe I' with a pressure-supply, such as compressed air or other iiuid under pressure, to force the amalgam or other coating4 material under pressure through the slot F or the openings F2 out of the distributer onto the surfaces D. The distributer F is filled from the reservoir H at the time the table C is in an inactive positionthat is, located at one side of the main frame, as shown in Fig. :I and when the table C moves into an active position the pipes G are cut oil from the reservoir H, and the pipe I is connected with the supply-pipes G to allow of forcing amalgam or other coating material out of the distributer under pressure.

In order to keep the amalgam in the distributer-F always in a proper iiuid condition, I provide the distributer F with a heatingpipe J, into which extends a burner K, connected with a suitable gas or other heat sup ply and arranged to burn a number of flames within the pipe J, so as to uniformly heat the same and also the coating material contained in the distributer F. (See Figs. 3, 4:, and 5.)

The burner K is provided on its outer end with a regulating-valve vK to regulate the amount of gas or heat passing to the burner, and the valve-stem'Kz of the said valve K is connected with a lever L', controlled by an expansion and contraction rod L, extending in the pipe J and secured thereto at the in- IOO `pipe J to a normal temperature.

ner end. The rod L is of a different metal than the pipe J, so that when the pipe J is heated above a normal temperature the expansion of the rod L causes av corresponding closing of the supply-valve K to decrease the supply of gas to the burner. When the pipe J cools, the rod L is correspondingly contracted to again open the `valve K' and supplyvmore gas to the burner for heating the The main frame A is preferably constructed of two standards connected With each other at the top by a cross-bar A.

The pipes G are provided with a two-way valve N and a three-Way valve O, located one above the other and automatically controlled from the table C. The valves Nin the pipes G are connected with each other, so as to be opened and closed simultaneously, and for this purpose a valve-stem N of one of the valves N carries a gear-wheel N2 (see Fig. 7) in mesh with a gear-wheel N3, attached to a shaft N4, journaled in the main frame A and carrying a gear-wheel N5 in mesh with a gear- 4Wheel N6, attached to the valve-stein of the other valve N; The gear-Wheel N2, above mentioned, is also in mesh with a segmental rack P, (see Figs. 2 and 7,) and this segmental rack P is fulcrumed on one side of the main frame and is provided with a weighted angular arm P', adapted to be engaged by a projection P2, carried on the forward end of the table C. Thus when the table C is moved in the direction of the arrow a to bring the surfaces D under the distributer F the projection P2 engages the arm P and imparts a swinging motion tothe same and the segmental rack P to rotate the gear-Wheel N2, so that the amalgam or other coating material can iiow from the reservoir H through the pipes G and the open valves O and N into the distributer F to fill the same. The three-Way valves O are openedl and closed simultaneously, and for this purpose one of the valves O carries on its valve-stem a bevel gear-wheel Q in mesh with a bevel gear-wheel Q, secured on a shaft Q2, extending transversely and journaled in suitable bearings on the main frame A, and the said shaft Q2 carries a bevel gear-wheel Q3 in mesh with a bevel gear-wheel O4, attached to the stem of the other valve O. Thus when the shaft Q2 is rotated both valves O are simultaneously opened or closed, according to the direction in which the shaft Q2 is rotated. On the shaft Q2 is secured a gear-wheel Q5 in mesh witha segmental rack QG, fulcrumed on the side of the frame A opposite the one on which the segmental rack P is fulcrumed, and this segmental rack Q6 is provided with a weighted angular arm Q7, adapted to be engaged by the forward end of the table C-that is, after the segmental rack P and the valves N have been actuated, as above described. Thus when the table C actuates the arm QT and imparts a swinging motion thereto and to the segmental rack Q6 the gear-Wheel Q5 and the shaft Q2 are rotated to simultaneously open the valves O and connect the lower portion of the pipes G with the pipe I, thereby cutting off the reservoir II and allowing the air or other fiuid pressure to pass through the pipe onto the amalgam or other coating material contained in the distributer F to force the said material through the dischargeslot F or openings F2 down onto the surfaces D, now traveling directly under the distributer F. The amalgam passes in even layers onto the surfaces D and also on that portion of the table C not covered by the surfaces. During the passage of the table C under the distributer F the arms P' and Q7 finally drop off the rear end of the table C, and as the said arms are weighted they will return automatically to their former normal positions, so as to change the positions of the valves O and N successively to first cnt off the fluid-pressure supply and then disconnect the reservoir from the distributer F. It is understood that when the next table opens the valve N then the amount of amalgam standing in the pipes Gr between the valves N and O serves to refill the distributer. This portion of the pipes G may be enlarged to supply the amount of amalgam necessary to refill the distributeil F. It is further understood that when the valves N are closed the amalgam remaining in the distributerF is held therein by atmospheric pressure.

I do not limit myself to the particular arrangement described for keeping the amalgam hot in the distributer, as other means may be employed for the purpose. It will also be seen that the pipes Gr and valves N and O may be heated, if found necessary, to keep the amalgam in the proper condition.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. A machine for applying coatings, provided vvith a distributer for the coating material, a coating-material supply for the said distributer, a fluid-pressure supply connected with the said distributer for forcing the coating material under pressure out of the distributer onto the surface to be coated, and means for alternately connecting the said coating-material supply and the said fluidpressure supply with the said distributer, as set forth.

2. A machine for applying coatings, provided with adistributer for the coating material, a coating-material supply for the said distributer, a fluid-pressure supply connected with the said distributer, for forcing the coating material under pressure out of the distributer onto the surface to be coated, means for alternately connecting the said coating-material supply and the said Iiuidpressure supply with the said distributer, a table for carrying the surfaces to be coated, and means for moving the table past the said distributer at a uniform rate of speed, as set forth.

3. A machine for applying coatings, com- IOO IIC

prising a table mounted to travel and adapted to carry the surfaces to be coated, means for moving the table, a distributer extending over the table at an angle to the line of Inovement of the table, the distributer having` discharge-openings for the coating` material To pass from the distributer onto the surfaces to be coated, a coating-material supply connected 'with the said distributer, and a pressuresupply for forcing the material out of the distributer by pressure, asset forth.

et. A machine for applying coatings, comprising` a table mounted to travel and adapted to carry the surfaces to be coated, means for moving the table, a distributer extending over the table at an angle to the line of movement of the table, the distributer having discharge openings for the coating material to pass from the distributer onto the surfaces to be coated, a coating-material supply connected with the said distributer, a pressure-supply for forcing the material out of the distributer by pressure, and heating means in the said distributer, as set forth.

5. A machine for applying coatings, coinprising a table mounted to travel and adapted to carry the surfaces to be coated, means for moving the table, a distribnter extending over the table at an angle to the line of movement of the table, the distributer having discharge-openings for the coating material to pass from the distribn ter onto the su rfaces to be coated, a coating-material su pply connected with the said distributor, a pressure-supply for forcing the material out of the distribu- Ier by pressure, and means for controlling the coating-material su pplyand the said pressuresupply, as set for-th.

6. A machine for applying coatings, comprising a table mounted to travel and adapted to carry the surfaces to be coated, means for moving the table, a distributer extending over the table at an angle to the line of movement of the table, the distributer having discharge-openings for the coating material to pass from the distributer onto the surfaces to be coated, a coating-material supply connected with the said distributer, a pressure-supply t'or forcing the material out of the distributer by pressure, and means for alternately connecting the said coating-material supply and the said pressure-supply with the said distributer, as set forth.

In testimony whereof I have signed my name to this specification in the presence ot' two subscribing witnesses.

JOSEPH B. MCKEOWN.

Vitnesses:

THEO. G. Hos'rER, EVERARD BOLTON MARSHALL. 

